U.S. CISA adds BerriAI LiteLLM and Check Point Security Gateway flaws to its Known Exploited Vulnerabilities catalog

CVE-2026-42271 is a command injection (CWE-77/CWE-78) in BerriAI LiteLLM's proxy server, a widely used AI gateway for calling LLM APIs. Two MCP preview endpoints (POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list) accept a full stdio server configuration, including command, args, and env fields, and spawn the supplied command as a subprocess on the proxy host; the endpoints are gated only by any valid proxy API key with no role check, so even low-privilege internal-user keys can trigger it. An attacker with any authenticated key gains arbitrary command execution with the privileges of the proxy process, and reporting indicates attackers are chaining the flaw into broader takeover of AI gateway servers, including reverse shells and crypto miners, in some cases via weak or default keys such as the example 'sk-1234' admin key. Any organization running LiteLLM versions 1.74.2 through before 1.83.7, including LiteLLM distributed with Red Hat OpenShift AI, is affected. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2026-06-08 and is under active attack, with a very high EPSS of 83.6% for exploitation within 30 days.

Do: Upgrade LiteLLM to version 1.83.7 or later immediately (federal agencies must act per CISA KEV/BOD 22-01), and apply Red Hat's advisory updates if running OpenShift AI. Until patched, restrict or rotate proxy API keys — especially low-privilege internal-user and any default/example keys such as 'sk-1234' — and limit network access to the /mcp-rest/test/* endpoints. Review proxy hosts for indicators of compromise such as unexpected spawned subprocesses, reverse shells, or crypto miners, and rotate credentials that may have been captured via compromised environments.

Check Point has disclosed CVE-2026-50751, a critical (CVSS 9.3) improper authentication flaw (CWE-287) in the certificate validation logic for Remote Access and Mobile Access VPN when the deprecated IKEv1 key exchange is used. An unauthenticated remote attacker can exploit this logic flow weakness during IKEv1 negotiation to bypass user authentication entirely. Successful exploitation lets the attacker establish a remote access VPN connection without a valid user password, gaining access to the organization's internal network resources (high confidentiality impact per the CVSS score). Any organization running a Check Point Security Gateway on Gaia OS or Gaia Embedded with IKEv1-based Remote Access/Mobile Access configured is affected; specific affected and fixed versions are in Check Point's advisory. The flaw is being exploited in the wild — it was added to CISA's Known Exploited Vulnerabilities catalog on 2026-06-08 with known ransomware use and an EPSS of 83.8% — and it was disclosed alongside other critical Check Point VPN certificate flaws per recent headlines.

Do: Upgrade affected Security Gateways to the fixed releases identified in Check Point's advisory (version numbers are not specified in the source data), prioritizing internet-facing VPN gateways; as an interim mitigation, move Remote Access/Mobile Access clients to IKEv2 or disable IKEv1. Review VPN authentication logs for sessions established without valid credentials, given known in-the-wild and ransomware exploitation. Federal agencies must apply mitigations per BOD 22-01, and defenders should beware of fake 'public PoC' repositories spreading malware (ChocoPoC RAT), since no legitimate public PoC is known.